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All Journal Jurnal Elementer (Elektro dan Mesin Terapan)
Siska Novita Posma
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Electrical & Electronics Engineering Engineering Mechanical Engineering

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Perancangan Filter EMI Pasif dalam Rangka Mitigasi Conducted emission pada Lampu LED Siska Novita Posma; Mohammad Yanuar Hariyawan; Oddy Rifandi
Jurnal Elektro dan Mesin Terapan Vol. 5 No. 2 (2019): Jurnal Elektro dan Mesin Terapan (ELEMENTER)
Publisher : Politeknik Caltex Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (570.612 KB) | DOI: 10.35143/elementer.v5i2.3376

Abstract

Light-emitting diode (LED) lamps become popular in a variety of applications, due to low power usage, high efficiency, and low maintenance. Another advantage of LEDs is that they are durable and environmentally friendly because they contain less toxic substance composition compared to other types of lamps. To achieve high efficiency in energy transfer to the LED power supply, a switching mode power supply (SMPS) is applied. SMPS was implemented with pulse width modulation (PWM) which operates at a constant frequency, producing significant emissions in several frequencies through conducted and radiated mechanisms. These emissions are called electromagnetic interference (EMI). As a result, many LED lamps have the potential to fail to meet the electromagnetic compatibility (EMC) standard. In this research, the design and implementation of passive EMI filters were carried out to reduce the conducted emission of LED lights on the market. Passive EMI filters are LC low pass filters (LPF). Before the LED lights were applied to the EMI passive filter, conducted emissions were measured to exceed CISPR 22 class B regulatory standards, which reached 82.5 dBµV. When the passive EMI filter was implemented, the LED lights occur conducted emission reduction in the frequency range 150kHz - 1.5MHz with an average value of 36.96 dBµV and a maximum reduction value of 34.7 dBµV.
Pengaruh Ketebalan Material Terhadap Shielding Effectiveness pada Frekuensi Rendah Mohammad Yanuar Hariyawan; Rizadi Sasmita Darwis; Siska Novita Posma
Jurnal Elektro dan Mesin Terapan Vol. 7 No. 2 (2021): Jurnal Elektro dan Mesin Terapan (ELEMENTER)
Publisher : Politeknik Caltex Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (255.871 KB) | DOI: 10.35143/elementer.v7i2.5176

Abstract

Today, the need for electronic devices with smaller and more compact dimensions integrating many functions is increasing. At the same time, the need for ubiquitous processor speed, clock, data rate, and wireless connectivity is also increasing. This increase in demand also results in an increase in electromagnetic interference (EMI) in the environment. Although rare, High-Impact, Low-Frequency (HILF) events have the potential to have a deleterious impact on the electric power system. In this study, an analysis of shielding effectiveness (SE) was carried out at low frequencies when the thickness of the shielding material was varied. The materials used in this research are aluminum sheet and aluminum foil, and they combine their thickness through a single layer or double layer scheme. The thickness of the shielding material affects the value of shielding effectiveness; as evidenced when the thickness of the material is increased to 2 times, an increase in the value of shielding effectiveness reaches 207%. The use of double layers shows an increase in shielding effectiveness which is better than increasing the thickness of the material.
Co-Authors Mohammad Yanuar Hariyawan Oddy Rifandi Rizadi Sasmita Darwis